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Anatomy Of Thorax > Sternum > Flashcards

Sternum Flashcards

1
Q

How many parts of sternum?

A

Sternum has 3 parts:
1. Manubrium
2. Body
3. Xiphoid process

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2
Q

The superior part of manubrium has a depression called?

A

Suprasternal/Jugular notch

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3
Q

On either side of jugular notch what joints are present?

A

Sternoclavicular joints

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4
Q

What is a facet?

A

A cartilage lined depression in bone

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5
Q

How many facets on lateral edges of sternum?

A

2 facets:
1. Facet for articulation with costal cartilage of 1st rib
2. Demifacet (half-facet) for articulation with costal cartilage of 2nd rib

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6
Q

Inferiorly manubrium articulates with body of sternum forming?

A

Sternal angle

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7
Q

Sternal angle marks the level of which costal cartilage?

A

2nd costal cartilage

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8
Q

Largest part of sternum?

A

Body

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9
Q

What are the 2 joints formed by body of sternum?

A

1.manubriosternal joint
Superiorly with manubrium

2.Xiphisternal joint
Inferiorly with xiphoid process

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10
Q

Articular facets present on the lateral edges of body are for costal cartilages of which ribs?

A

3 - 6

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11
Q

Smaller facets - Demi-facets are for which ribs?

A

2nd and 7th

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12
Q

Smallest part of sternum?

A

Xiphoid process

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13
Q

Which part of sternum is cartilaginous and ossifies late in life - around age of 40?

A

Xiphoid process

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14
Q

No ribs or costal cartilages are attached to which part of sternum?

A

Xiphoid process

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15
Q

In some individuals, xiphoid process articulates with part of costal cartilage of ?

A

7th rib

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16
Q

Most common site of fracture of sternum is?

A

Manubriosternal joint

17
Q

Which part of ribs articulates with sternal articular facets?

A

Costal cartilages

18
Q

Sternal angle is also called?

A

Angle of louis

19
Q

Sternal angle lies at the level of what structures?

A
  1. 2nd costal cartilage
  2. 4th and 5th thoracic vertebrae (T4 - T5)
  3. Bifurcation of trachea
  4. Junction of superior mediastenum and inferior mediastenum

Anatomy Of Thorax (10 decks)

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